Expansion-bolt.



H; WERNER.

- EXPAN$ION BOLT. APPLICATION fILED SEPTA, 1906'.

Patented May 11, 1909.

HIRAM K. WI-IITNER,

Prk'llilldlhlhl Qiil lCE. i

or CHICAGO, ILLINOIS.-

EXPANSION-BOLT.

Specification of Letters Patent.

Patented May 11, 1909.

Application filed September 4, 1906. Serial No: 333,085.

To alt whom it may concern:

Be it known that I, lllRAM h. vVnrrnEii, a citizen of the United States, residing at Chicage, in the county of Cool; and State of lllinois, have invented certain new and useful 1m rovenients in l lxpansion-Bolts; and I do dec fare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appcrtains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention relates to socalled expan sion bolts.

The object of my invention is to hold a bolt (lag screw) in a relative position in the masonry of walls in lniililiiigs, etc.

in Patent No. 519,365, issued to your pctitioner May 8th, 1894, and in lie-issues l\'os. 12,145 and 12,146, August 11, 1903, 1 show a lag screw installed in wooden window frames of buildings, said lag screw being'tho permanent fixture to a window-eleaners safety device. it will He noted therein, and as hereinafter shown, that a portion of the unthreadcd shank next the head of said lag screw is made to protrude in said installation, whereby-said installation is adapted to engage with a slotted plate, the terminal to a portable -\vind0w-' cleaners belt. Inasmuch as I donot limit myself to said uses in the arts, I omit the details of said terminals herein.

My invention consists in the construct-ion and arrangement of parts in a new and novel manner and for the purposes hereinafter set forth.

Figure 1 shows the various members of my invention assembled integrally. Fig. 2 shows one of said members. Fig. 3 shows another member differing from Fig. 2, in so much as the two sections of a longitudinally divided ilUt would differ, said Fig. 3 is shown longitudinally sectioned in Fig. 5, wherein a eonated formation is more clearly illustrated. Fig. 4. shows an end View of the assembled members as they appear upon the outside face of a wall, showing the bolt cross sectioned in the shank at the mouth of'the passa e for said bolt.

n Fig. 1, A is a so called -half shell, B being another half shell opposed to said shell A,

' said shells A and B letting serrated periphcries whereby a bile may be had upon the Walls of a boring in the masonry hereinafter I referred to as a wedge reversed housing; a is r a flange to halfshell A, b is a flange to half shell 'B.

(l is an annular disk, or washer, adapted to ing the operation of said installation, and furthermore will hold the flanges a. and l) snugly about the shank of said bolt, leaving the free extremes of said shells to assume the form of a dovetail spread within the Wedge reversed housing in the masonry of a building.

In .i igs. 2 and. 3 is seen the concavity of said hal'l' shells A and B, 1'] and F being the female threads of a nut; G and H are a trace of said female threading, being the a ex of said conated bolt passage, a threaded rmation not being essential at this point as hereinafter shown and described g and h are channels formed by the omission of the threaded formation at those points; 6 and f are eonated channels, the base of said cone being at the entrance to said bolt passage in said assembled members, said collation extends in parallel through the female threaded sections E and i As shown in Fig. 4, the function of annular disk 0 is to embrace half shells A and B; the flanges a and F) are to retain annular disk C in position outside of said wall and sung against the masonry, and furthermore to cover, to hide, any imperfections in the o'ri=- ice made insa'id wall re ')aratory to said installation. Inasmuch as I may omit said disk C when the said drilling leaves a snug modification of disk O, place of said disk C.

As shown. in Fig. 1, the function of A and B is to occupy the drilled housing wholly, while the said disk C, or its equivalent,

would be used the lag screw and the conatedfemale threads the lag screw is driven home. After the threads ofsald lag screw reach the channel orifice in such an event an annular ring, a

. fect ed between the conated male threads of.

E and F, Wherebythe expansion advances as hold the said assembled parts, as a unit, dur- 1 and flanges a and I), together with a section ielding of said installation is permissible, a. 10

er lag screw should be used in order that sai .loiiger screw may contact with the members G and H, making a rigid contact be tiireen the inner ends of said members also.

As shown Fig. l, space c,f, has a clear-- l snce between the concavity of said halt shells A ernl l3, the cross sectioned lag screw, the shaded member the purpose of said clesrance is to not have the channels (2 end 5 contact with the sl'iank ll) of the lag screw durnr the tilting process of shells A and B, Whi e making the installation such.

contact at the head end extreme would dieengage the registering of the opposing threaded members herein described. I may use a. soft cement or mortar mixture in said housings which necessarily must be in the form of a reversed Wedge in order to effect the dovetail installation herein contemplated, such filling of the interstices will afford additional stability in situations such as blocks of vterra ,cotta, the latter usually in the arts consistin of thin Walls with hollow interior spaces.

. aving thus described my invention, 1

will now point out in claims What is new and novel and What I Wish to secure by Letters Patent of the United State 1. In an expansion. bolt device, two half shells adapted. to be assembled in a Wedge reversed housing, said rcspccth c halt shells being provided with :1 flung-r.- at its head end extreme and a concavity having :1. greater diamete at said head and extreme and :1v lesser diameter at the free end extreme, said greater concavity being of a counted channel formation having its base at the said head end extreme, a collated nut formation intermediate in the surface of said ronraritv, said nut formation being provided with female threads, said threads being; raised nbowtho surface of said channeling and bring adapted to register with the threads of on inslullod lag screw.

.2. ln airexpansion bolt dmirr. loo hall shells adapted to be assembled in :1. \vodgjv reversed housing, said rcsprrtivo hull klli being provided with a dish retaining; thingo at its head end bxiremr, and a. romwuiiy having a greater diameter or said head end extreme and :1 lessor dinnulor at tho i i-no rod extreme. said r-grcaior'i'oncririig he ol I! counted channel formation 11mins. its lmrw at the said head end extreme, o. romdml not formation ll1.t(.lll1((ll:1l( in the surface ol said concavity, said out l'orumiion bring" provided With female threads, said threads luillgl raised above the surl'acc of said (llzUlli llhf and adapted to register with the threads of an installed lag screw, :1. disk adapted to hold said conatcd concavity about the shank of said lag screw. l

lllHAM hi. XYHIYIXlCii.

il'itliesscs:

llA'r'rin B. Lnun ANNA A. MOLUN m. 

